John was piloting a plane behind a car but was never able to overtake it. Why?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

How is the moon similar to a dollar?

How many times do a clock's hands overlap in a day ?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

Do You See It?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?